The remains of dozens of presumed US war dead returned to Hawaii on Wednesday after they were handed over by North Korea.

The US military believes the bones are those of American servicemen and potentially servicemen from other United Nations member countries who fought alongside the US on behalf of South Korea during the Korean war.

Incredibly beautiful ceremony as U.S. Korean War remains are returned to American soil. Thank you to Honolulu and all of our great Military participants on a job well done. A special thanks to Vice President Mike Pence on delivering a truly magnificent tribute!

US vice president Mike Pence spoke at a ceremony before the flag-draped containers carrying the remains were taken off planes in sets of four.

“Whosoever emerges from these aircraft today begins a new season of hope for the families of our missing fallen,” he said. “Hope that those who are lost will yet be found. Hope that after so many years of questions, they will have closure.”

Vice president Mike Pence, left, at a ceremony marking the arrival of the remains (AP Photo/Susan Walsh)

Each container was accompanied by one Marine, one sailor, one soldier and one airman. They set the caskets gently on risers lined up inside the hangar as Mr Pence stood watching with his hand over his heart.

Some of the invited guests wiped tears from their eyes during the procession.

North Korea handed over the remains last week and a US military plane made a rare trip into North Korea to retrieve the 55 cases.

About 7,700 US soldiers are listed as missing from the 1950-53 Korean War, and about 5,300 of the remains are believed to still be in North Korea.

Hanwell Kaakimaka’s uncle, John Kaakimaka, is among those who never came home.

Guests showed their emotions at a ceremony marking the arrival of the remains (AP Photo/Susan Walsh)

“We’ve been watching the news, and we’ve been hopeful that my uncle is among the remains,” he said, adding that it could bring his family some closure.

His uncle, who was from Honolulu, was a corporal in the 31st Infantry Regiment of the Army’s 7th Infantry Division. He went missing on or about December 2 1950.

Thank you to Chairman Kim Jong Un for keeping your word & starting the process of sending home the remains of our great and beloved missing fallen! I am not at all surprised that you took this kind action. Also, thank you for your nice letter - l look forward to seeing you soon!

Mr Kaakimaka said the story he heard from his father was that his uncle was injured and was being brought back from the front when Chinese troops overran the area and attacked the convoy.

US defence secretary Jim Mattis said last week that the return of the 55 boxes was a positive step, but not a guarantee that the bones were American.

A defence official said on Tuesday that it would probably take months, if not years, to fully determine individual identities from the remains.

Military members carry transfer cases from a military transport plane (AP Photo/Susan Walsh)

The repatriation is a breakthrough in a long-stalled US effort to obtain war remains from North Korea, with the return part of an agreement reached during a June summit between US president Donald Trump and North Korean leader Kim Jong Un.

Efforts to recover remains in North Korea have been fraught with political and other obstacles since the war’s end. Between 1990 and 1994, North Korea unilaterally handed over 208 caskets to the US, which turned out to contain remains of far more than 208 individuals, although forensics specialists thus far have established 181 identities.

A series of US-North Korean recovery efforts, termed “joint field activities”, between 1996 and 2005 yielded 229 caskets of remains, of which 153 have been identified, according to the Pentagon.